BASIC-DOS

MODE

MODE 40|80|BW40|BW80|CO40|CO80
MODE COMn:baud[,parity[,data[,stop]]]
MODE LPTn:[cols][,lines]

Sets the display, a serial port, or a printer. Any other argument, or none at all, displays Syntax error.

Display

Sets the display to 40 or 80 columns. BW turns color off, as SCREEN 0,0 does, and CO turns it on.

Serial Ports

Sets a serial port’s parameters:

• baud is the baud rate; two digits abbreviate a rate (eg, 96 for 9600, or 11 for 110)
• parity is N, O, or E; the default is N
• data is the number of data bits; the default is 8
• stop is the number of stop bits; the default is 1

For example, MODE COM1:96 is the same as MODE COM1:9600,N,8,1.

A serial port is set by opening it with its parameters and an input buffer length of 0 (see COM), which initializes the port and releases it again, so a port that’s already open (eg, the console) isn’t changed.

Printers

Sends an IBM/Epson printer its print codes:

• cols is 132 for condensed print, or 80 for normal print
• lines is 8 or 6 lines per inch

Any other value, or a value that’s omitted, sends nothing for that setting (eg, MODE LPT1:,8 sets only the lines per inch).

Source: MODE.BAS

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